G5       D5      A5

        |\       O
     ---|-\------------------------------------------------------
        |  >                       O                             
     ---|-/------O--------O--------------------------------------
        |/                                                       
     ---/--------------------------------------------------------
       /|  _              O        O                             
     -<-|-<->----O-----------------------------------------------
       \|  /                                                     
     ---|\/------------------------O-----------------------------
        |        O        O                                      
        V      ----              ----

               ----              --O-
                 O


Figure 7.1